Here's an odd one (at least for me). The bike in question is my '03 K2 Mach 2.0 with just over 1000 miles on it. The crankset is a TruVativ Elita triple.
While riding this past weekend I would notice a prounounced knocking noise while riding. It didn't happen every revolution of the cranks but would make the noise when under a heavier than normal load such as when climbing or hammering on the big ring on the flats.
The knocking sound only seemed to happen when the right crank was between the 12 and 3 o'clock positions. After we finished the ride I checked to see if either of the crankarms were loose and neither appeared to be.
What really makes this odd is I heard the noise on rides on Saturday and yesterday but did not hear the noise this morning on my commute to work.
Anyone ever have to deal with a knocking BB before?